Apparatus for printing telegraphic messages



N0. 61!,448. V Patented Sept. 27, I898.

G. M.'G|BSON.

APPARATUS FOR PRINTING TELEGRAPHIC MESSAGES. (Application filed Nov. 10, 1896.)

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No. 6l|,448. "Patented Sept 27, I898.

G. M. mason. APPARATUS FOR PRINTING TELEGRAPHIC MESSAGES.

(Application filed Nov. 10, 1896.)

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APPARATUS FOR PRINTING TELEGRAPHIG MESSAGES.

(Application filed Nov. 10, 1896.)

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W u u No. 6ll,448. Patented Sept. 27, l898.-'

G. M. GIBSUN. APPARATUS FOR PRINTING TELEGBAPHIB MESSAGES.

(Application filed Nov. 10, 1896.) (No Model.) 4 Sheets-Sheet 4.

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GODFREY MARSDEN GIBSON,

APPARATUS FOR PRINTING- OF CI-lULMLEIGI-I, ENGLAND.

TELEGRAPIHIC MESSAGES.

SPECIFICATION forming part of Letters Patent No. 611,448, dated September 27, 1898. Application filed November 10, 1896. Serial No. 611,605. (No model.)

To all whomit may concern: Be it known that LGODFREY MARSDEN GIBSON, gentleman, a subject of the Queen of Great Britain, residing at The Rectory; Chulmleigh, North Devon, England, have in- J vented certain new and useful Improvements in Apparatus for Printing Telegraphic Messages in Type, of which the following is a speciy fication. J

,According tothis invention the receiving instrument punches holes in a strip of paper, which actuates a type-printing machine. The messages may be sent either, by hand or au tomatically, the transmitter being of any description; but it is preferred that currents of both polarities should be employed. The instrument is, however, well adapted for receiving Morse signals and translating them into printed characters. This current or these currents actuate punches forming holes in a traveling strip ofpaper. The punching apparatus forms no part of the present invention. The punched strip of paper thus produced is carried to the type-printing machine, or, preferably, to increase the speed, it is cut into lengths and taken to several machines. This may be done automatically.

Figure 1 is a plan, and Fig. 2 a side elevation, of the printing-machine. Fig. 2 is a transverse vertical section, omitting many of the parts, taken at the groove H and showing the magnet-levers, &c. Fig. 2 is a transverse vertical section, omitting a number of the parts, taken at the groove I. Fig. 3 is a detached sectional side elevation, to a larger scale, of the type-wheel and parts connected with it. Figs. 4Eand5 are diagram views of the lever for disconnecting the type-wheel from the drivingscrew; Fig. 6 is a local transverse section of the printing-lever and paper-feed. Figs. 7 and 8 are similar views showing the parts in different positions. Fig. 9 is a longitudinal section, and Fig. 10 an end elevation, of the mechanism for closing the printing-circuit. Fig. 11 is a diagram View of the circuits. Fig. 12 is a diagram view showing the position of the pins in the grooves A to I.

1 is the main driving-shaft, which is continuously revolved in the same direction by an electric or other motor. This shaft has a of the shaft 2,which is thus frictionallydriveu.

3 is a screw by which the pressure of the shaftl against the shaft 2 can be regulated, and4 is a locking-nut.

The shaft 2 has a screw-thread upon it, and outside this is a sleeve 5, to which a cylinder 6 is fixed. The type-wheel '7 is free to slide longitudinally on the sleeve 5, but is prevented from turning relatively to it by the pin 8, which enters a slot in the sleeve and also normally enters the screw-thread on the shaft 2. I

9 is a spring tending to press the pin 8 radially outward, and 10 is a slidingrod nor mally preventing this motion.

11 is a spring pressing the type-wheel 7 from right to left.

12 is an arm fixed to the shaft 2 and having pivoted to it a lever 13, which is prevented from turning down beyond a horizontal position by a stop, (not shown,) against which it is normally held by a spring 14. One end of the lever 13 bears against the end of the arm 15, fixed to the sleeve 5, which therefore turns with the shaft 2; but if the tail end of the lever 13 be depressed by the lever 16, as hereinafter described, the lever 13 is raised into the position shown in Fig. 3 out of contact with the arm 15 and the sleeve 5 ceases to be driven by the shaft A, B, O, D, E, F, G, H, and I are grooves in the cylinder 6, each of which has a number of longitudinal pins across it, the relative positions of which are shown in the diagram Fig. 12, and a, b, 0, 01,6, f, g, h, and t' are vertical pins entering these grooves. The pins a to tare pivoted to the ends of horizontal arms a. to 2'", fixed to horizontal shafts a to "R, to which are also fixed horizontal arms a t0 t carrying the armatures of the electric magnets A to I. When no currents are passing through the coils of the magnets, the armatures are kept out of contact with their cores by springs a to 11 fixed to the arms a" to 1 When in this position, the pins 0. to .h are out of the grooves A to H, as the arms a to h are on the opposite side of the shafts a to h to the arms a to h but since the arm 71 is on the same side of the shafti as the arm 2 as is clearly seen in Fig. 1, the pin tis in the groove 1, and, bearing against one of the pins in it, prevents the cylinder 6, sleeve 5, type= wheel 7, and shaft 2 from rotatin gin spite of the continuous rotation of the shaft 1. Every time a current is sent then, as hereinafter described, the magnet I attracts its armature and withdraws the pin 1', allowing the cylinder 6 to rotate and one or other of the magnets A to Hsay Aalso attracts its armature, so raising one or other of the pins 0. to hsay a-which again arrests cylinder 6 after it has made a partial revolution. \Vhen the current ceases, the pin a falls and releases the cylinder, which commences to turn, but is at once arrested by the rise of the pin 1', not, however, until it has advanced sufficiently to bring the pin in the groove A to the other side of the pin a, so that if the latter pin is again raised the cylinder 6 will turn until the next pin in the groove A comes against it. For this purpose the pins in the grooves A to H are not in a line with the pins in the groove I, but are intermediate between them, as shown in the diagram Fig. 12. When the type-wheel 7 has been brought by one or more currents to the proper position, then, as hereinafter described, the circuit through the printing-magnet J is closed, the letter is printed, and immediately afterward a circuit is closed through the magnets I and H, withdrawing the pint and raising the pin it, and the cylinder 6 and type-wheel 7 revolve until they reach their zero position, when they are arrested by the single pin in the groove H coming against the pin h. Just before this takes place the left-hand end of the lever 13, Fig. 3, comes against the under side of the lever 16, Figs. 4: and 5, which is pivoted at 17 to the side plate 19 of the frame, and is thereby depressed, its other end being raised and freed from the arm 15. The shaft 2 therefore continues to revolve, although the sleeve 5 is held stationary. When the end of the lever 13 has passed the pivot 17 of the lever 16, it is raised by its spring 14, so lifting the tail end of the lever 16 and bringing the latter into the position shown at Fig. 5, and its friction on its pivot is sufficient to retain it there. Vhen, therefore, the shaft 2 has made a complete revolution after the stoppage of the sleeve 5, the lever 13 misses the lever 16, and not being turned out of its horizontal position comes against the arm 15 and is arrested. For each letter, therefore, the type-wheel makes one complete revolution and the shaft 2 two complete revolutions. The revolution of the shaft 2 relatively to the sleeve 5 moves the pin 8 and type-wheel 7 along the sleeve from left to right the distance between two threads, so bringing the type -Wheel into position for printing the next letter by the side of the first. During the time the sleeve is turning to bring the next letter into position to be printed, or it may be when it is returning to zero after it has been printed, the lever 13 comes against the tail end of the lever 16 and brings it back to the position shown at Fig. 4. On the completion of the line of printing the end of the slide 10 comes against the plate 18, forming part of the frame of the ma chine, and the further movement of the typewheel to the right brings the pin 8 opposite the thinner part of the slide 10, and the pin is then forced outward by its spring 9, so freeing it from the screw, but not from the slot in the sleeve. The spring 11 then carries the type-wheel back to the left-hand end of the sleeve, and the end of the slide 10, striking the plate 19, forces the pin 8 again into gear with the screw on the shaft 2. The paper is supplied from a reel (not shown) and passes partly around the bar 20, Fig. 6, carried by arms 21, fixed to the sleeve 22 on the shaft 23, and to which is also fixed the arm 24,0arrying the armature of the printing-magnet J. The paper is kept in place on the bar by the rods 25, carried by the arms 26, fixed to the shaft 23, to which is also fixed the arm 27, carrying the armature of the magnet K. The rods 25 are covered with india-rubber and are normally wedged onto the bar 20 and move with it; but at the beginning of each line a circuit is closed through the magnets K and L, which attract their armatures, so bringing the rods 25 into the position shown in Fig. 7 and causing the paper to be nipped between the magnet L and its armature. The next time a circuit is closed through the printing-magnet J it brings the bar 20 into the position shown in Fig. 8 and releases the rods 25, as hereinafter described, thus taking hold of the paper in a fresh place, and the printing goes on, as before, on a new line.

The circuit is closed through the printingmagnet J by the mechanism shown at Figs. 9 and 10. This mechanism is also shown in Fig. 2, but for the sake of clearnessis omitted from Fig. 1. 28 is a shaft driven at a uniform speed'by a motor, (it may be the same motor which drives the shaft 1,) and 29 is a sleeve on this shaft. 30 and 31 are friction-surfaces fixed to the shaft 28 and sleeve 29, respectively. 32 is a groove in the sleeve receiving the forked end of the lever 33,which carries the armature of the electromagnet M. The armature is normally held away from the magnet by the spring 34, so that the surfaces 30 and 31 are normally in contact and the sleeve 29 driven by the shaft 28. 35 is a contact-arm fixed to the sleeve and traveling over the plate 36, on which there are two contact-surfaces 37 and 38. Each of'the circuits through the magnets A to G also embraces the magnet M, and every time, therefore, that a signal is sent the latter magnet attracts its armature, separating the surfaces 30 and 31, whereupon the arm 35 is pulled by a helical spring 39 back to the stop 40. If, however, no signal is sent for a certain fixed time, the arm reaches the contact 37 and closes the printing-circuit. Immediately afterward the arm, continuing to revolve, reaches the contact 38 and closes the circuits through the magnets H and I, so withdrawing the pin 2' and allowing the cylinder 6 to revolve until it reaches the zero-point. \Vhen the next sig nal is sent, the arm passes back across the contact 37 and 38 without touching them, becausethe magnet M is attractingits armature, so drawing back the sleeve 29. The circuit through the magnets K and L of the paperfeed is closed by the spring contact-maker 4.1, Fig. 3, operated by the type-wheel when it comes back to the beginning of a line. In this circuitis a contact 42, Figs. 6 and 7,which normally rests against the back of one of the arms 21, so that the circuit is broken each time the arm goes forward to print. The circuit is also broken directly the type-wheel moves away from the contactil. The punched paper as it is drawn through the machine produces a series of currents in local-battery circuits in any convenient manner--such, for example, as that employed in a Wheatstone transmitter.- As these currents correspond to the original positive and negative currents, it will be convenient to so call them, although I it is not necessary that they should have these polarities.

Fig. 11 is a diagram view showing the circuits. In this figure for the sake of simplicity only one battery is shown to energize all the circuits; but it will be understood that each circuit may have its own battery and that the strength of these batteries would vary according to the work they have to do.

N is alocal battery, and O O O are terminals.

46 in Fig. 11.

43 and 4a are fingers hinged to the terminals 0 O and resting on the paper 45, which is drawn across the terminal 0. P, Q, R, S, T, and U (see also Figs. 1 and 2) are electromagnets whose armatures P to U are normally kept by springs in contact with the upper contacts 19, q, 7', s, i, and u. The magnets, however, are also wound with a few turns of a circuit only broken by the act of printing in an exactly similar way to that employed for the paper-feed. This circuit, with its branch to the magnet U, is marked The branches to the magnets P Q R S T are, to avoid confusion, omitted,

but they are exactly similar toy that to U.

The magnetism produced by this winding is not sufficient to move the armatures against their springs, but it is sufficient to hold them when attracted down into the lower contacts 19, q, r, s, t, and it. Or the magnets may be singly wound and a weak permanentcurrent employed for the same purpose.

If the hole in the paper strip corresponds to a positive current, the circuit is from the battery N to the magnet I, magnet M, terminal O, finger 4E3, terminal 0 armature P, contact 19, armature Q, contact q, magnet S, and magnet A back to the battery. The result of the current therefore is to move the armature S from the contact 3 to the contact .9, where it remains, to raise the pin a and lower the pin '6. If a first positive current be followed by a second, the circuit is the same and the pin a is again raised, and so on; but if a positive current be followed by a negative one the circuit is from the battery N to the magnet I, magnet M, terminal 0, finger 4.4L, terminal 0 armature S, contact .9, armature U, contact a, magnet Q, magnet B, back to the battery. The effect of this current, therefore, is to transfer the armature Q from the contact q to the contact q to raise the pin 17 and to lower the pin 1 Similarly the pin 0 is raised by a positive current following d is raised by a negative current, 6 by a positive following a negative, f by a negative following g by a negative following or by a positive following If in any sequence two currents of the same polarity follow immediately after each other, the corresponding pin is raised twice, but the circuits are not changed. Thus a sequence of'} will successively raise the pins Ct 19 c c g. It will be at once seen on referring to Fig. 12 that the result of this is to stop the cylinder successively at the first pin in groove A, first pin in groove B, first pin in groove 0, second pin in groove 0, first pin in groove G; but if the original had been it would have been first pin in groove A, second pin in groove A, fifth pin in groove B, sixth pin in groove 0, third pin in groove G, because the fifth is the first pin in groove B in advance of the second pin in A, and so on for the others. Again, there are ten pins in the groove B. These would respectively come against the pin 1) in response to the following currents: first pinof B second pin of B third pin ofB -,fourth pin ofB fifth pin of B sixth pin of B seventh pinof B eighth pin of B lninth pin of B -,tenthpinofB++++ In short, the drum tends to revolve constantly when freed, and its surface tends to move from right to left of Fig. 12. Before the beginning of any signal the drum is held stationary by pin z'being in contact with the first pin (counting from-the left) in groove I. If the signal begins with a current, pin a is raised, pin '11 is' lowered, and thedrum moves till arrested by the first pin in groove A coming against the pin a. Pin a is then immediately lowered, pin '5 raised, and the drum is again arrested by second pin in groove I coming against *5. If the current is followed by a second current, a is againraised and lowered and 'i lowered and raised, and the drum successively arrested by second pin in A coming against a and by the twenty-second pin in I coming against '6, and so on. At the first reversal of the polarity of the current I) is raised and not a. If the reversal takes place after a single current, the first pin of B comes against 1); if after two currents,then the fifth pin of B; if after three, then the eighth, and so on. On the next reversal c is raised and not a or b, and on the next g and not a, b, or c. 'In all cases directly the drum is arrested the pin a, b, c, or g, as the case may be, is lowered and the pin 2' raised again, arresting the drum after it has moved half the distance between I two pins in groove 1. Similarly if the signal begins with a current (1 is raised and at the first reversal e is raised, at the second f, and at the third g. If'two currents of the same polarity follow immediately after each other, the same pin is raised twice; or the the whole operation may be summed up as follows: Pin a is raised by a first current. Pin b is raised by a first current, followed by Pin 0 is raised by a first current, followed by Pin 9 is raised by a first current, followed by Pin d is raised by a first current. Pin e is raised by a first current, followed by Pin f is raised by a first current, followed by Pin 9 is raised by a first current, followed by Any current of the same polarity as the last again raises the last-raised pin.

47 is a magnet by which the fingers 43 and 44' can be attracted and lifted off the terminal O. This magnet is in a circuit one branch of which passes through earth to the pins a to 9, while the other branch leads to the cylinder 6, (which is insulated.) Each time, therefore, one of the pins in the grooves A to G comes against one of the pins a to g the circuit is closed, the fingers 43 and 44 are lifted, and thus the circuit through the magnet A to G (as the case may be) is broken immediately it has done its work by stopping the cylinder 6 at the proper place.

The mechanism for inking the type-wheel may be of any ordinary description and is not shown.

The pins a to vi may be fixed directly to the armatures of the magnets A to 1, which in this case would range around the cylinder 6.

What I claim is- 1. The combination of a type-wheel tending constantly to revolve, rings of pins revolving with it and pins, onefor each ring of pins operated by the signals and each engaging with the pins of one of the rings.

2. The combination of a type-wheel tending constantly to revolve, rings of pins revolving with it, the number of such pins being greater than the number of rings, and pins of the same number as there are rings each engaging with the pins of one of the rings.

3. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-Wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve and meansfor connecting and disconnecting the screw and the sleeve.

4. The combination of ascrew tending constantly to revolve, a sleeve on the screw, a type-Wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, a spring tending to force the pin outward, an inclined slide carried by the typewheel and acting on the pin, abutments for the slide at each end of the machine, and

means for connecting and disconnecting the screw and the sleeve.

5. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type-wheel reaches the zero-point.

6. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, a spring tending to force the pin outward, an inclined slide carried by the typewheel and acting on the pin, abutments for the slide at each end of the machine, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means of turning the lever when the type-wheel reaches the zero-point.

7. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins operated by the signals each engaging with the pins of one of the rings, and means for connecting and disconnecting the screw and the sleeve.

8. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins operated by the signals each engaging with the pins of one of the rings, a spring tending to force the pin on the type-wheel outward, an inclined slide carried by the type-wheel and acting on the pin, abutments for the slide at each end of the machine, and means for connecting and disconnecting the screw and the sleeve.

9. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins operated by the signals each engaging with the pins of one of the rings, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type-wheel reaches the zero-point.

10. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve,

pins operated by the signals each engaging with the pins of one of the rings, aspring tendin g to force the pin on the type-wheel outward, an inclined slide carried by the type-wheel and acting on the pin, abutments for the slide at each end of the machine,*arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the typewheel reaches the zero-point.

11. The combination of a type-wheel, means for rotating it, for advancing it step by step along the line and for bringing it back to the commencement of the line, a printing-bar over which the paper passes, two rods fitting aboveand below the printing-bar and holding the paper to it, and means for gripping the paper and separating the rods from the {oar before the commencement of each new 12. The combination of atype-wheel,means for rotating it, for advancing it step by step along the line and for bringing it back to the commencement of the line, a printing-bar over which the paper passes, two rods fitting above and below the printing-bar and holding the paper to it, pivoted arms carrying the bar and the rods, electromagnets tending to turn the arms about their pivots, means for closing a circuit through the one magnet to efiect the printing and means for closing a circuit through the other magnet and for gripping the paper before the commencement of each line.

.13. The combination of a type-wheel, two sets of electromagnets controlling it, localbattery circuits engaging the magnets, contactmakers actuated by'the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the op* posite polarity to the next magnet of its series.

14. The combination of a type-Wheel tending constantly to revolve, rings of pins revolving with it, and pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits engaging the magnets,contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the opposite polarity to the next magnet of its series.

15. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve rings of pins, carried by the sleeve, pins each engaging with the pins of one of the rings, two sets ofelectromagnets operatin g the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the opposite polarity to the next magnet of its series and means for connecting and disconnecting the screw and the sleeve.

16. Thecombinationofascrewtendingconstantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operat ing the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, a spring tending to force the pin on the type-wheel outward, an inclined slide carried by the type-wheel and acting on the pin, abutments for the slide at each end of the machine, and means for connecting and disconnecting the screw and the sleeve. a

17. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type wheel reaches the zero-point. a

18. The combination of ascrew tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins' carried by the sleeve, pins each engaging with the pins ofone of the rings, two sets of electromagnets operat ing the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and electromagnets whereby each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, a spring tending to force the pin on the type-wheel outward, an inclined slide carried by the type-wheel and acting on the pin, abntments for the slide at each end of the machine, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type-wh eel reaches means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets, pairs of contacts between which the armatures move and connections between the magnets armatures and contacts such that each successive signal transfers the circuit of the opposite polarity to the next magnet of its series.

20. The combination of a type-wheel tending constantly to revolve, rings of pins re.- volving with it, and pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contactmakers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and a third set of electromagnets on the circuits, means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets, pairs of contacts between which the armatures move and connections between the magnets, armatures and contacts such that each successive signal transfers the circuit of the opposite polarity to the next magnet of its series.

21. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and a third set of electromagnets on the circuits, means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets, pairs of contacts between which the armatures move and connections between the magnets armatures and contacts such that each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, and means for connecting and disconnecting the screw and the sleeve.

22. The combination of a screw tending cons-tantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and a third set of electromagnets on the circuits, means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets, pairs of contacts between which the armatures move and connections between the magnets armatures and contacts such that each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, a spring tending to force the pin on the typewheel outward, an inclined slide carried by the type-wheel and acting on the pin, abutments for the slide'at each end of the ma-.

chine, and means'for connecting and disconnecting the screw and the sleeve.

23. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and a third set of electromagnets on the circuits, means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets pairs of contacts between which the armatures move and connections between the magnets armatures and contacts such that each successive signal transfers the circuit of the opposite polarity to the next magnet of its series, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type-wheel reaches the zero-point. 24. The combination of a screw tending constantly to revolve, a sleeve on the screw, a type-wheel on the sleeve and free to slide along it, a pin carried by the type-wheel and engaging with the screw through a slot in the sleeve, rings of pins carried by the sleeve, pins each engaging with the pins of one of the rings, two sets of electromagnets operating the pins, local-battery circuits energizing the magnets, contact-makers actuated by the line-signals or corresponding punched paper and closing the circuit through the first magnet of one set for a first positive signal and through the first magnet of the other set for a first negative signal and a third set of electrom agnets on the circuits, means for passing a weak current (only broken by the act of printing) through the latter magnets, pivoted armatures, springs tending to draw the armatures away from the magnets, pairs of contacts between which the armatures move and connections between the magnets armatures and contacts such that each successive signal transfers the circuit of the opposite p0- larity to the next magnet of its series, a spring tending to force the pin on the type-wheel outward, an inclined slide carried by the type-wheel and acting on the pin, abutments for the slide at each end of the machine, arms fixed to the sleeve and the screw, a lever pivoted to one of the arms and bearing against the other and means for turning the lever when the type-Wheel reaches the zero-point.

GODFREY MARSDEN GIBSON.

Witnesses:

HENRY WHITEHEAD SLoss, JOHN FRANCIS. 

